<template>
  <div class="report-container">
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>数据统计</el-breadcrumb-item>
      <el-breadcrumb-item>数据报表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card>
      <div id="main" style="width: 800px; height: 400px" ref="echartsBoxRef"></div>
    </el-card>
  </div>
</template>

<script>
import echarts from 'echarts'
import _ from 'lodash'
export default {
  name: 'Report',
  data() {
    return {
      echartOption: {
        title: {
          text: '用户来源'
        },
        tooltip: {
          trigger: 'axis',
          axisPointer: {
            type: 'cross',
            label: {
              backgroundColor: '#E9EEF3'
            }
          }
        },
        grid: {
          left: '3%',
          right: '4%',
          bottom: '3%',
          containLabel: true
        },
        xAxis: [
          {
            boundaryGap: false
          }
        ],
        yAxis: [
          {
            type: 'value'
          }
        ]
      }
    }
  },
  methods: {
    async initEchart() {
      const myChart = echarts.init(this.$refs.echartsBoxRef)

      const { data: res } = await this.$http({
        method: 'GET',
        url: 'reports/type/1'
      })
      if (res.meta.status !== 200) return this.$message.error('获取图标数据失败')

      const result = _.merge(res.data, this.echartOption)
      myChart.setOption(result)
    }
  },
  // 因为 echarts 是需要操作 DOM 元素的，所以应该在 mounted 钩子函数中调用
  mounted() {
    this.initEchart()
  }
}
</script>

<style lang="less" scoped></style>
